Grain-thresher elevator-boot.



D. D. COTTRELL.

GRAIN THRESHER ELEVATOR BOOT.

APPLICATION FILED IvIIIII. 9. IsIe.

1,204949. Patented Nov. 14, 1916.

HUHHIM /M MII/ I l wim/ss /lvI/mrof? A TTORIVEYS IANFORTH D. COTTRELL, OF NEWKIRK, OKLAHOMA.

GRAIN-THRESHER ELEVATOR-BOOT.

Specification of Letters Patent.

Patented Nov. ist, 1916.

Application led March 9, 1916. Serial No. 83,122.

To all lwhom t may concern Be it known that l, DANronri-r D. Cor- TRELL, a citizen of the United States, and a resident of llewkirk, in the county of Kay and State of Oklahoma, have invented a new and useful Improvement in Grain- Thresher Elevator-l3oots, of which the following is a specification.

In` the operation of milling machinery7 and more particularly in the delivery of grain from the thresher to bins or like receivers, considerable difficulty and annoyance have been met with by the choking of the grain in the boot. This has been found to be due chiefly to insufficient clearance between the lateral delivery of the thresher and the boot or receiving portion of the elevater.

This invention is designed to provide ample room at the juncture of the discharge and the elevator, whereby the grain enters the boot and passes freely in front of the cups or buckets, so as` to be` taken up thereby without tendency to bank or choke.

The invention consists of a grain boot having the receiving portion enlarged gradually both longitudinally and laterally to accommodate the grain in its delivery to the elevator, and thereby obviate any tendency to j am and choke. n

The invention further consists of the novel features and details of construction which hereinafter will be more particularly set forth, illustrated in the drawings hereto attached, and subsequently claimed.

While the drawings show the preferred embodiment of the invention it is to be understood that in adapting the same to meet the many conditions that may arise various changes in the form, proportion and minor details of construction may be resorted to without departing from the nature of the invention.

ln the drawings :-Figure 1 is an elevation of a portion of a thresher and elevator illustrating an embodiment of the invention,`

Fig. 2 is an enlarged horizontal section on the line 2 2 of Fig. 1, Fig. 3 is an enlarged view in elevation of the receiving portion of the elevator, the cover plate of the vboot being removed.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The elevator illustrated comprises legs 1 and 2, and a boot 3v connecting the lower4 ends of the legs and adapted to receive the grain or other commodity from a suitable sourceby means of a spout, tube, or like conductor el.. As indicated most clearly in Fig. 2 the spout, tube or conductor 4 is provided with a feeder 5 of the auger type for positively advancing the grain therethrough The boot comprises a rear wall 6, a front lwall 7, and an outer wall 8, which is curved in the usual manner to conform to the bight of the elevator belt. A pulley 9 is mounted within the boot and its axis is approXimately concentric with the outer wall 8 of the boot. The elevator belt 10 passes around the pulley 9 and is provided with cups, buckets or like lifting elements 1]., which engage the grain or other commodity and move the same through the delivery leg of the elevator. The elevator and concomitant parts may be of any ordinary construction and arrangement, and are illustrated to demonstrate the application and advantages of the invention.

The spout, troughor like part 'l connects with the rear wall 6 of the boot as indicated most clearly at 12 in Fig. 2. The lower and rear portions of the outer wall 8 of the boot conform to the line of travel of the outer ends of the buckets or lifting elements 11. The forward portion 13 of the cuter wall of the boot gradually departs from the axis of the pulley 9 so as to provide an enlarged space 111 for the reception of the grain and thereby prevent any possible choking or jamming of the elevator. The forward portion 13 of the outer wall of the boot is transversely inclined with the result that the space 14 is larger toward the rear wall 6 of the boot and is constricted toward the outer or front wall 7 of such boot. The space 14. of the boot is largest at its upper end which receives the bulk of the grain or commodity from theconveyer 1, thereby enabling such grain to pass in front of the buckets or lifting elements 11 withouttending to be obstructed by such buckets in the operation of the elevator. It is noted that the conveyer at connects with the rear wall 6 of the boot forward of the axis of the pulley 9 with the result that the gra in is delivered into the forward portion of the boot which is best adapted to receive such grain by 'reason of the enlarged space 14. By having the forward portion 13 of the outer wall transversely inclined the grain or other commodity is supplied uniformly to the buckets or lifting elenients 11 of the elevator. The transverse inclination of the part'l of the outer wall of the boot directs the grain to ward the outer portion of the boot, thereby y serving to equalize the distribution with the result that the elevator is equally loaded. The space 14 is largest at its upper end and is gradually constricted in a downward and outward direction because ofthe relative dual inclination of the portion 13 of the outer wall of the boot. To admit of access being readily had to the boot for any purpose the front wall is provided with the usual opening which is closed by means of a cover plate 15.

The grain or other commodity is supplied to the boot of the elevator b v means of the spout, trough or like part 4 through which the commodity is fed by means of the screw conveyer 5. The grain is delivered into the boot so as to be received in the forward enlarged portion 1st which provides ample clearance and room for the grain to pass in front of the buckets or lifting elements so `as to be engaged thereby and moved through the boot and the delivery leg 2 of the elevator to the required point of discharge. By reason of the enlarged receiving portion of the boot there is no tendency of the grain or commodity to lodge within the boot and choke the elevator and interfere with the free passage of the grain from the source of supply to the required point of delivery.

lf claim 1. An elevator boot provided in its receiving portion with an enlarged space which is gradually constricted laterally and circuinferentially so as to equalize delivery of the grain and prevent choking of the elevator.

2. An elevator boot comprising front and rear walls and an outer connecting wall, the latter having its forward portion gradually departing from the axis of the boot and laterally inclined from the rear wall toward the front.

B. In an elevator a boot comprising front and rear walls and an outer connecting wall having its lower and rear portions conforming to a circle whose center coincides with the axis of the boot and the outer wall having its forward portion gradually departing from the axis of the boot and transversely inclined from rear to front, the rear wall having' a receiving opening with which connects a delivery spout by means of which the grain or other material is supplied to the hoot of the elevator.

DANFORTH D. COTTRELL.

lllitnesses M. T. ONEILL,

A. A. SLossoN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

